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AS LS1 Vocabulary
Astronomy Learning Set 1 Vocabulary
Term | Definition |
---|---|
Crater | a rounded depression in the surface of a planet, moon, or solid body. |
Impact crater | a crater formed when an object strikes a planet, moon, or solid body. |
Hypothesis | a prediction of what will happen to a dependent variable when a change is made to the independent variable while other variables are held constant. |
Meteoroid | a small-solar system body that has the potential to become a meteor. |
Meteor | an object that enters Earth’s atmosphere with such speed that it glows. |
Dwarf planet | a rounded solar-system body that is smaller than a planet. |
Asteroid belt | a region of the solar system between Mars and Jupiter in which most asteroids are located. |
Asteroid | a rocky or metallic solar-system body that revolves around the Sun, between 10 m and around 500 km in diameter. |
Comet | a small, icy solar-system body that revolves around the Sun and forms a tail as it gets closer to the sun. |
Coma | the cloud of gas and dust that forms around a comet as parts of the comet vaporize. |